One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,4)(3,7,8,6)(9,10)(11,13)(12,14)(15,16)(17,18,19,26,22,20,23,24)(21,25,27,32,29,28,30,31)(1,3,5,8)(2,6,4,7)(9,10)(11,15)(12,14)(13,16)(17,19,22,23)(18,24,20,26)(21,27,29,30)(25,31,28,32)(9,11)(10,13)(12,16)(14,15)(17,20,22,18)(19,26,23,24)(21,28,29,25)(27,32,30,31)(1,2,5,4)(3,7,8,6)(11,16)(13,15)(17,21)(18,25)(19,27)(20,28)(22,29)(23,30)(24,31)(26,32)(1,4,5,2)(3,7,8,6)(10,14)(13,15)(21,29)(25,28)(27,30)(31,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.